Eugauria crenata Chen & Wu, 2015

Wu, Zhi-Gang, Chen, Fu-Qiang & Wu, Chun-Sheng, 2015, Review of the genus Eugauria Snellen (Lepidoptera: Crambidae: Musotiminae) in China, with descriptions of two new species, Zoological Systematics 40 (4), pp. 470-475 : 473-475

Eugauria crenata Chen & Wu , sp. nov. ( Figs 4 , 8–9 )

© Zoological Systematics, 40(4): 470–475

© Zoological Systematics, 40(4): 470–475

Diagnosis. Forewing with the inner edge of the white patch strongly incurved. In male genitalia, the apex of uncus is pointed, the transtilla is finger-like, the narrow sacculus bears an apical harpe, and the valva is broad at apex.

Descriptions. Adults. Wing span male 13 mm, female 15 mm. Head, thorax and abdomen dark fuscous; labial palpi upturned, dark fuscous on sides, the length about 2 times of the diameter of compound eyes, the 2nd slender and the 3rd segment pointed; maxillary palpi upturned; proboscis relatively short. Forewing dark fuscous; a black spot at the upper angle of cell; a white patch at postmedial area, arising from costa to Cu 1, the inner edge strongly incurved; a yellow band at the outside of the white patch; the outside of the yellow band without the crescent patch, which present in other two species of this genus; cilia dark fuscous. Hindwing dark fuscous; a black spot at the middle of cell; anal angle with an incision; submarginal band with 5 connected black eye spots, the eye spots with a silvery spot centrally; cilia dark fuscous.

Male genitalia. Uncus slender, the apex pointed; gnathos slender, little shorter than uncus, apex rounded, with dorsal teeth; tegumen with inverse V-shaped ridge dorsally; valva broaden form the base to the distal, transtilla slender, finger-like, sacculus narrow and sclerotized, with a blunt spine-like apical harpe, the harpe shorter than that of E. albidentata ; vinculum long; saccus large, rounded; juxta plate-like; aedeagus slender and sclerotized.

Female genitalia. Anal papillae narrow, with long setae; apophysis posterioris and anterioris relatively short, apophysis anterioris swollen near the base; ostium bursae sclerotized; ductus bursae long, ducuts seminalis arising just below ostium bursae; corpus bursae rounded, membranous, signa lined, the length about half diameter of corpus bursae.

Holotype ♂, Hainan, Bawangling, Dong'er Forestry-centre (19.1ºN, 109.2ºE; elev. 1 015 m), 8 May 2007, Fu-Qiang Chen (Ny1023), deposited in IZCAS.

Paratype 1♀, Hainan, Jianfengling (18.7ºN, 108.9ºE), 1 December 1981, Zhi-Qing Chen (Ny1025), deposited in IZCAS .

Distribution. China (Hainan).

Etymology. The name is derived from the Latin " crenate ", corresponding to the shape of inner edge of the white patch.

Funding This research was supported by the National Natural Science Foundation of China (31101655, 31471959).

Acknowledgements We are very grateful to Mr. Shi-Mei Song (IZCAS) for providing great help in our research, and Dr. Shen-Horn Yen (National Sun Yat-sen University, Taiwan) for providing us useful reprints and information of the genus.

Figures

Figs 2–4. Adults of Eugauria spp. (a. enlargement of forewing). 2. E. albidentata. 3. E. arcuosa Chen & Wu, sp. nov., holotype, ♂. 4. E. crenata Chen & Wu, sp. nov., holotype, ♂.

Figs 5–9. Genetalia of Eugauria spp. (a. aedeagus; b. dorsal view of apical gnathos). 5. E. albidentata, male. 6–7. E. arcuosa Chen & Wu, sp. nov., male and female. 8–9. E. crenata Chen & Wu, sp. nov., male and female. Scales bars=1mm.